summaryrefslogtreecommitdiffstats
path: root/kdm/kfrontend/kgapp.cpp
blob: 152dc28bcc396511cbe6b64168f9b796822c8ee1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
/*

Greeter module for xdm

Copyright (C) 1997, 1998 Steffen Hansen <hansen@kde.org>
Copyright (C) 2000-2003 Oswald Buddenhagen <ossi@kde.org>


This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

*/

#include <config.h>

#include "kdm_greet.h"
#include "kdmshutdown.h"
#include "kdmconfig.h"
#include "kgapp.h"
#include "kgreeter.h"
#ifdef XDMCP
# include "kchooser.h"
#endif
#include "sakdlg.h"

#include <kprocess.h>
#include <kcmdlineargs.h>
#include <kcrash.h>
#include <kstandarddirs.h>
#include <ksimpleconfig.h>
#include <klocale.h>
#include <kdebug.h>
#ifdef WITH_XRANDR
#include <libkrandr/libkrandr.h>
#endif

#include <tqtimer.h>
#include <tqstring.h>
#include <tqcursor.h>
#include <palette.h>

#include <stdlib.h> // free(), exit()
#include <unistd.h> // alarm()

#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/keysym.h>
#include <X11/cursorfont.h>

#ifdef HAVE_XCOMPOSITE
#include <X11/extensions/Xrender.h>
#include <X11/extensions/Xcomposite.h>
#endif

#include <pwd.h>

bool argb_visual_available = false;
bool has_twin = false;
bool is_themed = false;
bool trinity_desktop_lock_use_sak = TRUE;

static int
ignoreXError( Display *dpy ATTR_UNUSED, XErrorEvent *event ATTR_UNUSED )
{
        return 0;
}

extern "C" {

static void
sigAlarm( int )
{
	exit( EX_RESERVER_DPY );
}

}

GreeterApp::GreeterApp()
{
	pingInterval = _isLocal ? 0 : _pingInterval;
	if (pingInterval) {
		struct sigaction sa;
		sigemptyset( &sa.sa_mask );
		sa.sa_flags = 0;
		sa.sa_handler = sigAlarm;
		sigaction( SIGALRM, &sa, 0 );
		alarm( pingInterval * 70 ); // sic! give the "proper" pinger enough time
		startTimer( pingInterval * 60000 );
	}
}

GreeterApp::GreeterApp(Display *dpy, Qt::HANDLE visual, Qt::HANDLE colormap) : KApplication(dpy, visual, colormap)
{
	pingInterval = _isLocal ? 0 : _pingInterval;
	if (pingInterval) {
		struct sigaction sa;
		sigemptyset( &sa.sa_mask );
		sa.sa_flags = 0;
		sa.sa_handler = sigAlarm;
		sigaction( SIGALRM, &sa, 0 );
		alarm( pingInterval * 70 ); // sic! give the "proper" pinger enough time
		startTimer( pingInterval * 60000 );
	}
}

void
GreeterApp::timerEvent( TQTimerEvent * )
{
	alarm( 0 );
	if (!PingServer( qt_xdisplay() ))
		::exit( EX_RESERVER_DPY );
	alarm( pingInterval * 70 ); // sic! give the "proper" pinger enough time
}

bool
GreeterApp::x11EventFilter( XEvent * ev )
{
	KeySym sym;

	switch (ev->type) {
	case FocusIn:
	case FocusOut:
		// Hack to tell dialogs to take focus when the keyboard is grabbed
		ev->xfocus.mode = NotifyNormal;
		break;
	case KeyPress:
		sym = XLookupKeysym( &ev->xkey, 0 );
		if (sym != XK_Return && !IsModifierKey( sym ))
			emit activity();
		break;
	case ButtonPress:
		emit activity();
		/* fall through */
	case ButtonRelease:
		// Hack to let the RMB work as LMB
		if (ev->xbutton.button == 3)
			ev->xbutton.button = 1;
		/* fall through */
	case MotionNotify:
		if (ev->xbutton.state & Button3Mask)
			ev->xbutton.state = (ev->xbutton.state & ~Button3Mask) | Button1Mask;
		break;
	}
	return false;
}

extern bool kde_have_kipc;

extern "C" {

static int
xIOErr( Display * )
{
	exit( EX_RESERVER_DPY );
}

//KSimpleConfig *iccconfig;

void
checkSAK(GreeterApp* app)
{
	app->restoreOverrideCursor();
	SAKDlg sak(0);
	sak.exec();
	app->setOverrideCursor( Qt::WaitCursor );
}

void
kg_main( const char *argv0 )
{
	static char *argv[] = { (char *)"kdmgreet", 0 };
	KCmdLineArgs::init( 1, argv, *argv, 0, 0, 0, true );

	kdDebug() << timestamp() << "start" << endl;
	kde_have_kipc = false;
	KApplication::disableAutoDcopRegistration();
	KCrash::setSafer( true );

	KProcess *tsak = 0;
	KProcess *proc = 0;
	KProcess *comp = 0;
	KProcess *twin = 0;

	trinity_desktop_lock_use_sak = _useSAK;
	if (trinity_desktop_lock_use_sak) {
		tsak = new KProcess;
		*tsak << TQCString( argv0, strrchr( argv0, '/' ) - argv0 + 2 ) + "tsak";
		tsak->start(KProcess::Block);
	}
	if (tsak) {
		tsak->closeStdin();
		tsak->detach();
		delete tsak;
	}

#ifdef HAVE_XCOMPOSITE
	// Begin ARGB initialization
	XSetErrorHandler( ignoreXError );
	argb_visual_available = false;
	char *display = 0;

	Display *dpyi = XOpenDisplay( display );
	if ( !dpyi ) {
		kdError() << "cannot connect to X server " << display << endl;
		exit( 1 );
	}

	int screen = DefaultScreen( dpyi );
	Colormap colormap = 0;
	Visual *visual = 0;
	int event_base, error_base;

	if ( XRenderQueryExtension( dpyi, &event_base, &error_base ) ) {
		int nvi;
		XVisualInfo templ;
		templ.screen  = screen;
		templ.depth   = 32;
		templ.c_class = TrueColor;
		XVisualInfo *xvi = XGetVisualInfo( dpyi, VisualScreenMask | VisualDepthMask
				| VisualClassMask, &templ, &nvi );

		for ( int i = 0; i < nvi; i++ ) {
			XRenderPictFormat *format = XRenderFindVisualFormat( dpyi, xvi[i].visual );
			if ( format->type == PictTypeDirect && format->direct.alphaMask ) {
				visual = xvi[i].visual;
				colormap = XCreateColormap( dpyi, RootWindow( dpyi, screen ), visual, AllocNone );
				kdDebug() << "found visual with alpha support" << endl;
				argb_visual_available = true;
				break;
			}
		}
	}
	XSetErrorHandler( (XErrorHandler)0 );

	GreeterApp *app;
	if ( (argb_visual_available == true) && (!_compositor.isEmpty()) ) {
		app = new GreeterApp(dpyi, Qt::HANDLE( visual ), Qt::HANDLE( colormap ));
	}
	else {
		app = new GreeterApp();
	}
	// End ARGB initialization
#else
	GreeterApp *app = new GreeterApp();
#endif

	XSetIOErrorHandler( xIOErr );
	TQString login_user;

	Display *dpy = qt_xdisplay();

	if (!_GUIStyle.isEmpty())
		app->setStyle( _GUIStyle );

	// Load up systemwide display settings
#ifdef WITH_XRANDR
	KRandrSimpleAPI *randrsimple = new KRandrSimpleAPI();
	TQPoint primaryScreenPosition = randrsimple->applySystemwideDisplayConfiguration("", KDE_CONFDIR);
	delete randrsimple;
#endif

	// Load up the systemwide ICC profile
	TQString iccConfigFile = TQString(KDE_CONFDIR);
	iccConfigFile += "/kicc/kiccconfigrc";
	KSimpleConfig iccconfig(iccConfigFile, true);
	if (iccconfig.readBoolEntry("EnableICC", false) == true) {
		TQString iccCommand = TQString("/usr/bin/xcalib ");
		iccCommand += iccconfig.readEntry("ICCFile");
		iccCommand += TQString(" &");
		system(iccCommand.ascii());
	}

	_colorScheme = locate( "data", "kdisplay/color-schemes/" + _colorScheme + ".kcsrc" );
	if (!_colorScheme.isEmpty()) {
		KSimpleConfig config( _colorScheme, true );
		config.setGroup( "Color Scheme" );
		app->setPalette( app->createApplicationPalette( &config, 7 ) );
	}

	app->setFont( _normalFont );

	setup_modifiers( dpy, _numLockStatus );
	SecureDisplay( dpy );
	if (!_grabServer) {
		if (_useBackground) {
			proc = new KProcess;
			*proc << TQCString( argv0, strrchr( argv0, '/' ) - argv0 + 2 ) + "krootimage";
			*proc << _backgroundCfg;
			proc->start();
		}
		GSendInt( G_SetupDpy );
		GRecvInt();
	}

	if (!_compositor.isEmpty()) {
		comp = new KProcess;
		*comp << TQCString( argv0, strrchr( argv0, '/' ) - argv0 + 2 ) + _compositor.ascii();
		comp->start(KProcess::NotifyOnExit, KProcess::Stdin);
	}

	if (!_windowManager.isEmpty()) {
		twin = new KProcess;
		*twin << TQCString( argv0, strrchr( argv0, '/' ) - argv0 + 2 ) + _windowManager.ascii();
		twin->start();
		has_twin = true;
	}

	GSendInt( G_Ready );

	kdDebug() << timestamp() << " main1" << endl;
	setCursor( dpy, app->desktop()->winId(), XC_left_ptr );

	for (;;) {
		int rslt, cmd = GRecvInt();

		if (cmd == G_ConfShutdown) {
			int how = GRecvInt(), uid = GRecvInt();
			char *os = GRecvStr();
			KDMSlimShutdown::externShutdown( how, os, uid );
			if (os)
				free( os );
			GSendInt( G_Ready );
			_autoLoginDelay = 0;
			continue;
		}

		if (cmd == G_ErrorGreet) {
			if (KGVerify::handleFailVerify( TQT_TQWIDGET(tqApp->desktop()->screen( _greeterScreen )) ))
				break;
			_autoLoginDelay = 0;
			cmd = G_Greet;
		}

		KProcess *proc2 = 0;
		app->setOverrideCursor( Qt::WaitCursor );
		FDialog *dialog = NULL;
#ifdef XDMCP
		if (cmd == G_Choose) {
			dialog = new ChooserDlg;
			GSendInt( G_Ready ); /* tell chooser to go into async mode */
			GRecvInt(); /* ack */
		} else
#endif
		{
			if ((cmd != G_GreetTimed && !_autoLoginAgain) ||
			    _autoLoginUser.isEmpty())
				_autoLoginDelay = 0;
			if (_useTheme && !_theme.isEmpty()) {
				// Qt4 has a nasty habit of generating BadWindow errors in normal operation, so we simply ignore them
				// This also prevents the user from being dropped to a console login if Xorg glitches or is buggy
				XSetErrorHandler( ignoreXError );
				KThemedGreeter *tgrt;
				bool has_twin_bkp = has_twin;
				is_themed = true;
				has_twin = false;	// [FIXME] The themed greeter is built on the assumption that there is no window manager available (i.e. it keeps stealing focus) and needs to be repaired.
				dialog = tgrt = new KThemedGreeter;
				kdDebug() << timestamp() << " themed" << endl;
				if (!tgrt->isOK()) {
					is_themed = false;
					has_twin = has_twin_bkp;
					delete tgrt;
					checkSAK(app);
					dialog = new KStdGreeter;
#ifdef WITH_XRANDR
					dialog->move(dialog->x() + primaryScreenPosition.x(), dialog->y() + primaryScreenPosition.y());
#endif
				}
				else {
#ifdef WITH_XRANDR
					dialog->move(primaryScreenPosition.x(), primaryScreenPosition.y());
#endif
				}
				XSetErrorHandler( (XErrorHandler)0 );
			} else {
				checkSAK(app);
				dialog = new KStdGreeter;
#ifdef WITH_XRANDR
				dialog->move(dialog->x() + primaryScreenPosition.x(), dialog->y() + primaryScreenPosition.y());
#endif
			}
			TQPoint oldCursorPos = TQCursor::pos();
#ifdef WITH_XRANDR
			TQCursor::setPos(oldCursorPos.x() + primaryScreenPosition.x(), oldCursorPos.y() + primaryScreenPosition.y());
#endif
			if (*_preloader) {
				proc2 = new KProcess;
				*proc2 << _preloader;
				proc2->start();
			}
		}
		app->restoreOverrideCursor();
		Debug( "entering event loop\n" );
		// Qt4 has a nasty habit of generating BadWindow errors in normal operation, so we simply ignore them
		// This also prevents the user from being dropped to a console login if Xorg glitches or is buggy
		XSetErrorHandler( ignoreXError );
		rslt = dialog->exec();
		XSetErrorHandler( (XErrorHandler)0 );
		Debug( "left event loop\n" );

		login_user = static_cast<KGreeter*>(dialog)->curUser;

		if (rslt != ex_greet) {
			delete dialog;
		}
		delete proc2;
#ifdef XDMCP
		switch (rslt) {
		case ex_greet:
			GSendInt( G_DGreet );
			continue;
		case ex_choose:
			GSendInt( G_DChoose );
			continue;
		default:
			break;
		}
#endif
		break;
	}

	KGVerify::done();

	if (comp) {
		if (_compositor == "kompmgr") {
			// Change process UID
			// Get user UID
			passwd* userinfo = getpwnam(login_user.ascii());
			if (userinfo) {
				TQString newuid = TQString("%1").arg(userinfo->pw_uid);
				// kompmgr allows us to change its uid in this manner:
				// 1.) Send SIGUSER1
				// 2.) Send the new UID to it on the command line
				comp->kill(SIGUSR1);
				comp->writeStdin(newuid.ascii(), newuid.length());
				usleep(50000);	// Give the above function some time to execute.  Note that on REALLY slow systems this could fail, leaving kompmgr running as root.  TODO: Look into ways to make this more robust.
			}
		}
		comp->closeStdin();
		comp->detach();
		delete comp;
	}
	if (twin) {
		twin->closeStdin();
		twin->detach();
		delete twin;
	}
	delete proc;
	UnsecureDisplay( dpy );
	restore_modifiers();

	XSetInputFocus( qt_xdisplay(), PointerRoot, PointerRoot, CurrentTime );

	delete app;
}

} // extern "C"

#include "kgapp.moc"